Experiences with Symbol devices and/or ls problems in dlpsh

I'm trying to get pilot-link to work with a Symbol SPT-1800. Everything SEEMS to work OK, with the exception of the dlpsh tool. When doing an ls it looks like it gets the same file set twice, but slightly corrupted. E.g

...
SFE_Symbol_Control
SFE_DiagUtil
í

ServerSyncLog
SFT-EE_SYMSFTES
SFT-EE_SYMSFPOR
SFT-EE_SYMSFPAR
...
SFE_Symbol_Control
SFE_DiagUtil
í

error: index backs up

Has anyone else seen this "index backs up" error with other devices?
Has anyone seen different kinds of problems with Symbol devices?

I don't seem to have any problems with my Samsung SPH-I300 or Treo 650.